Question 1

The main source of titanium is:

Accepted Answer

A) seawater 
B) rutile ore,TiO2  
C) oxide ores 
D) TiS2  
E) atmospheric gases 
A) seawater 
B) rutile ore,TiO2  
C) oxide ores 
D) TiS2  
E) atmospheric gases

Question 2

Choose the INCORRECT statement.

Accepted Answer

A) The inner transition elements include the lanthanides. 
B) The lanthanides are sometimes called rare earth elements. 
C) The lanthanides feature the filling of the 5f orbitals. 
D) The lanthanides have very similar chemical properties. 
E) Lanthanides are difficult to separate from each other. 
A) The inner transition elements include the lanthanides. 
B) The lanthanides are sometimes called rare earth elements. 
C) The lanthanides feature the filling of the 5f orbitals. 
D) The lanthanides have very similar chemical properties. 
E) Lanthanides are difficult to separate from each other.

Question 3

Use the couples Cr2+(aq)| Cr3+(aq),-0.424 V and Cr3+(aq)| Cr2O72-(aq),-1.33 V to determine E° of   Cr2+(aq).

Accepted Answer

A) -0.02 V 
B) 1.75 V 
C) -1.75 V 
D) 0.81 V 
E) -1.10 V 
A) -0.02 V 
B) 1.75 V 
C) -1.75 V 
D) 0.81 V 
E) -1.10 V

Question 4

Choose the INCORRECT statement.

Accepted Answer

A) Most representative element bonding involves s and p orbitals. 
B) Most transition element bonding involves p orbitals. 
C) Most representative elements are single oxidation states. 
D) Most transition elements are multiple oxidation states. 
E) Metallurgy is the study of metals. 
A) Most representative element bonding involves s and p orbitals. 
B) Most transition element bonding involves p orbitals. 
C) Most representative elements are single oxidation states. 
D) Most transition elements are multiple oxidation states. 
E) Metallurgy is the study of metals.

Question 5

Choose the INCORRECT statement about the most common oxidation state of transition elements.

Accepted Answer

A) For Ti,it is +4. 
B) For Sc,it is +2. 
C) For V,it is +5. 
D) For Cr,it is +6. 
E) For Mn,it is +7. 
A) For Ti,it is +4. 
B) For Sc,it is +2. 
C) For V,it is +5. 
D) For Cr,it is +6. 
E) For Mn,it is +7.

Question 6

Choose the INCORRECT statement about the transition elements.

Accepted Answer

A) The atomic radii increases to the right across the periodic table. 
B) The first ionization energy is about the same as the Group 2 (II
A) elements. 
C) The lanthanide contraction is responsible for the second and third series of transition elements being very similar in atomic radii. 
D) The lanthanide contraction is due to the f electrons not screening as well as other electrons. 
E) The electron configuration of cobalt and copper are anomalous. 
A) The atomic radii increases to the right across the periodic table. 
B) The first ionization energy is about the same as the Group 2 (II
A) elements. 
C) The lanthanide contraction is responsible for the second and third series of transition elements being very similar in atomic radii. 
D) The lanthanide contraction is due to the f electrons not screening as well as other electrons. 
E) The electron configuration of cobalt and copper are anomalous.

Question 7

Gold does not react with either nitric acid nor hydrochloric acid alone,but can be dissolved by aqua regia to form the tetrachloroaurate(III)ion,water and nitric oxide.What is the sum of the coefficients when the net equation for this process is balanced?

Accepted Answer

A) 17 
B) 14 
C) 11 
D) 9 
E) 7 
A) 17 
B) 14 
C) 11 
D) 9 
E) 7

Question 8

Galvanized steel is iron coated with cadmium to prevent rust.

Accepted Answer

A) True 
 B)False

Question 9

Zinc oxide,a useful fungicide,can be prepared from zinc blende ore by roasting the ore in air and then purifying the resulting oxide.What mass of zinc oxide could be obtained from 5.00 kg of a zinc blende ore that analyzed at 48.6% zinc sulfide,if the net conversion is 66.7% efficient?

Accepted Answer

A) 0.98 kg 
B) 1.35 kg 
C) 1.51 kg 
D) 1.89 kg 
E) 2.07 kg 
A) 0.98 kg 
B) 1.35 kg 
C) 1.51 kg 
D) 1.89 kg 
E) 2.07 kg

Question 10

Lanthanides are very difficult to separate from each other because of the similarities in chemical properties.

Accepted Answer

A) True 
 B)False

Question 11

Choose the INCORRECT statement.

Accepted Answer

A) Iron's main use is in steel. 
B) The ferromagnetic metals are Fe,Co,Ni. 
C) Iron only exists in +1 and +2 oxidation states. 
D) Fe,Co,and Ni can all exist in the +2 oxidation state. 
E) Fe3+ is more stable than Fe2+ because it has a half-filled d subshell. 
A) Iron's main use is in steel. 
B) The ferromagnetic metals are Fe,Co,Ni. 
C) Iron only exists in +1 and +2 oxidation states. 
D) Fe,Co,and Ni can all exist in the +2 oxidation state. 
E) Fe3+ is more stable than Fe2+ because it has a half-filled d subshell.

Question 12

Choose the INCORRECT statement.

Accepted Answer

A) Zn,Cd,and Hg all have electron configurations of (n-1)d10ns2. 
B) Because in Zn,Cd,and Hg only s electrons are participating,metallic bonding is strong. 
C) The low melting and boiling points of Zn,Cd,and Hg are due to the metallic bonding. 
D) Galvanized iron is iron coated with zinc. 
E) Cadmium and mercury compounds are poisonous. 
A) Zn,Cd,and Hg all have electron configurations of (n-1)d10ns2. 
B) Because in Zn,Cd,and Hg only s electrons are participating,metallic bonding is strong. 
C) The low melting and boiling points of Zn,Cd,and Hg are due to the metallic bonding. 
D) Galvanized iron is iron coated with zinc. 
E) Cadmium and mercury compounds are poisonous.

Question 13

Write the equation for the initial treatment of titanium ore.

Accepted Answer

A) TiO2(s)+ Cl2(g)+ C(s)→ TiCl2(g)+ CO2(g) 
B) TiCl4(s)+ 2 H2O(l)→ TiO2(g)+ HCl(g) 
C) TiO2(s)+ 2 Cl2(g)+ C(s)→ TiCl4(g)+ 2 CO(g) 
D) Ti(s)+ 2 Cl2(g)→ TiCl4(g) 
E) TiS(s)+ 2H2O(l)→ TiO2(g)+ 2 H2S(g) 
A) TiO2(s)+ Cl2(g)+ C(s)→ TiCl2(g)+ CO2(g) 
B) TiCl4(s)+ 2 H2O(l)→ TiO2(g)+ HCl(g) 
C) TiO2(s)+ 2 Cl2(g)+ C(s)→ TiCl4(g)+ 2 CO(g) 
D) Ti(s)+ 2 Cl2(g)→ TiCl4(g) 
E) TiS(s)+ 2H2O(l)→ TiO2(g)+ 2 H2S(g)

Question 14

Choose the INCORRECT statement about metallurgy.

Accepted Answer

A) Roasting converts the ore to its oxide. 
B) Reduction reduces the oxide to metal. 
C) Carbon is often used as the reducing agent. 
D) Coke or powdered coal is often used as the reducing agent. 
E) Refining is the removal of metal from its ore. 
A) Roasting converts the ore to its oxide. 
B) Reduction reduces the oxide to metal. 
C) Carbon is often used as the reducing agent. 
D) Coke or powdered coal is often used as the reducing agent. 
E) Refining is the removal of metal from its ore.

Question 15

Choose the INCORRECT statement about transition elements.

Accepted Answer

A) The lower oxidation states usually form ionic compounds. 
B) The higher oxidation states usually form covalent compounds. 
C) Many transition elements and their compounds have catalytic activity. 
D) The catalytic activity is due to p-orbital availability. 
E) Transition metal ions are good Lewis acids. 
A) The lower oxidation states usually form ionic compounds. 
B) The higher oxidation states usually form covalent compounds. 
C) Many transition elements and their compounds have catalytic activity. 
D) The catalytic activity is due to p-orbital availability. 
E) Transition metal ions are good Lewis acids.

Question 16

Estimate the net formation constant for diamminesilver(I)ion from the following data:
Ag+(aq)+ e- → Ag(s)E° = 0.80 V
Ag(NH3)2+(aq)+ e- → Ag(s)+ 2 NH3(aq)E° = 0.37 V

Accepted Answer

A) 6 × 1011  
B) 5 × 1010  
C) 4 × 109  
D) 3 × 108  
E) 2 × 107  
A) 6 × 1011  
B) 5 × 1010  
C) 4 × 109  
D) 3 × 108  
E) 2 × 107

Question 17

Which of the following is amphoteric?

Accepted Answer

A) V2O5 
B) CrO 
C) Al(H2O)63+ 
D) Fe(H2O)63+ 
A) V2O5 
B) CrO 
C) Al(H2O)63+ 
D) Fe(H2O)63+

Question 18

Which of the following is uncharacteristic for the elements of the first transition series?

Accepted Answer

A) an inner core of electrons in the argon configuration 
B) two 4s electrons for eight elements,and one 4s electron for Cr and Cu 
C) a number of 3d electrons ranging from one for Sc to ten for Cu and Zn 
D) except for Sc and Ti,only minor variation in atomic radii 
E) only one possible oxidation state per element,different for each 
A) an inner core of electrons in the argon configuration 
B) two 4s electrons for eight elements,and one 4s electron for Cr and Cu 
C) a number of 3d electrons ranging from one for Sc to ten for Cu and Zn 
D) except for Sc and Ti,only minor variation in atomic radii 
E) only one possible oxidation state per element,different for each

Question 19

Choose the INCORRECT statement.

Accepted Answer

A) Precipitation in hydrometallurgy is to precipitate the metal as an ionic solid or reduce it to the metal. 
B) Leaching for gold is done by the cyanidation process where Au(s)is complexed with cyanide ion. 
C) Electrolytic method is used to purify expensive metals. 
D) Pyrometallurgy uses low temperature to freeze out the metal from the ore. 
E) Hydrometallurgy uses water and aqueous solutions at moderate temperatures to handle materials. 
A) Precipitation in hydrometallurgy is to precipitate the metal as an ionic solid or reduce it to the metal. 
B) Leaching for gold is done by the cyanidation process where Au(s)is complexed with cyanide ion. 
C) Electrolytic method is used to purify expensive metals. 
D) Pyrometallurgy uses low temperature to freeze out the metal from the ore. 
E) Hydrometallurgy uses water and aqueous solutions at moderate temperatures to handle materials.

Question 20

Which of the following forms a colorless aqueous solution?

Accepted Answer

A) CuClO4 
B) CoSO4 
C) NiCl2 
D) FeCl3 
A) CuClO4 
B) CoSO4 
C) NiCl2 
D) FeCl3

Exam 23: The Transition Elements

The main source of titanium is:

Choose the INCORRECT statement.

Use the couples Cr2+(aq)| Cr3+(aq),-0.424 V and Cr3+(aq)| Cr2O72-(aq),-1.33 V to determine E° of Cr2+(aq).

Choose the INCORRECT statement.

Choose the INCORRECT statement about the most common oxidation state of transition elements.

Choose the INCORRECT statement about the transition elements.

Gold does not react with either nitric acid nor hydrochloric acid alone,but can be dissolved by aqua regia to form the tetrachloroaurate(III)ion,water and nitric oxide.What is the sum of the coefficients when the net equation for this process is balanced?

Galvanized steel is iron coated with cadmium to prevent rust.

Zinc oxide,a useful fungicide,can be prepared from zinc blende ore by roasting the ore in air and then purifying the resulting oxide.What mass of zinc oxide could be obtained from 5.00 kg of a zinc blende ore that analyzed at 48.6% zinc sulfide,if the net conversion is 66.7% efficient?

Lanthanides are very difficult to separate from each other because of the similarities in chemical properties.

Choose the INCORRECT statement.

Choose the INCORRECT statement.

Write the equation for the initial treatment of titanium ore.

Choose the INCORRECT statement about metallurgy.

Choose the INCORRECT statement about transition elements.

Estimate the net formation constant for diamminesilver(I)ion from the following data: Ag+(aq)+ e- → Ag(s)E° = 0.80 V Ag(NH3)2+(aq)+ e- → Ag(s)+ 2 NH3(aq)E° = 0.37 V

Which of the following is amphoteric?

Which of the following is uncharacteristic for the elements of the first transition series?

Choose the INCORRECT statement.

Which of the following forms a colorless aqueous solution?

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Use the couples Cr²⁺(aq)| Cr³⁺(aq),-0.424 V and Cr³⁺(aq)| Cr₂O₇^2-(aq),-1.33 V to determine E° of Cr²⁺(aq).

Estimate the net formation constant for diamminesilver(I)ion from the following data: Ag⁺(aq)+ e^- → Ag(s)E° = 0.80 V Ag(NH₃)₂⁺(aq)+ e^- → Ag(s)+ 2 NH₃(aq)E° = 0.37 V